Granted Patent
Utility
US 5,290,979 · App. 08/047,669
Handle block for electrical switching device
Inventor:
William E. Grass
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Apr 19, 1993
Inventor
William E. Grass
Assignee (at issue)
Eaton Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.